Re: Factoring (X^2 - 4)

If you don't mind I will experiment with your post using the "math" tag:

mikau wrote:

Yeah, always remember the differance of two squares.

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Always be on the look out for numbers with integer square roots. For instance

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Also variables with even exponants other (then zero) can always be converted to a square.

Example of the first one:

[math]\Large x^2 - y^2 = (x + y)(x - y)[/math]

Now, using the math tag makes things a *little* slower, so best to use when other options fail. I often just cut and paste the symbols from the top of the forum, but there is no "^4", so that is where the math tag could help.

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman